Walker, E., Elsworth, S., & Nguyễn Văn Phước. (2003). Grammar practice for intermediate students: With answers (New ed.). Tp.HCM: Nxb Trẻ.
Chicago Style citaatWalker, Elaine., Steve Elsworth, en Nguyễn Văn Phước. Grammar Practice for Intermediate Students: With Answers. New ed. Tp.HCM: Nxb Trẻ, 2003.
MLA citatieWalker, Elaine., Steve Elsworth, en Nguyễn Văn Phước. Grammar Practice for Intermediate Students: With Answers. New ed. Tp.HCM: Nxb Trẻ, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.